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network: disconnect from server on malformed header subs

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closes #4478
This commit is contained in:
SomberNight
2018-07-03 17:17:20 +02:00
parent 8b1051fa24
commit 75a85a8161
1 changed files with 6 additions and 1 deletions
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7
lib/network.py
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@@ -1065,7 +1065,12 @@ class Network(util.DaemonThread):
self.on_stop() self.on_stop()
def on_notify_header(self, interface, header_dict): def on_notify_header(self, interface, header_dict):
header_hex, height = header_dict['hex'], header_dict['height'] try:
header_hex, height = header_dict['hex'], header_dict['height']
except KeyError:
# no point in keeping this connection without headers sub
self.connection_down(interface.server)
return
header = blockchain.deserialize_header(util.bfh(header_hex), height) header = blockchain.deserialize_header(util.bfh(header_hex), height)
if height < self.max_checkpoint(): if height < self.max_checkpoint():
self.connection_down(interface.server) self.connection_down(interface.server)